According to @AveryChing, blockchains can be viewed as a subset of oracles because both price data and user transactions are delivered on-chain via secure mechanisms such as consensus, signed attestations, or optimistic proofs, which reframes how traders assess oracle-related risk in crypto markets, source: Avery Ching on X, Nov 27, 2025. In DeFi, oracle prices directly govern collateral valuation and trigger liquidations in lending markets, making oracle design and update frequency material to trading risk for tokens tied to oracle networks and for protocols that consume them, source: Aave Docs Price Oracle and Liquidation. Different oracle security models align with this framing, including consensus-secured blockchains for transaction inclusion and finality, publisher-signed price updates in oracle networks, and optimistic dispute windows for data validation, source: Ethereum.org Docs Proof-of-Stake and finality; Pyth Documentation Price Updates and Signed Attestations; UMA Documentation Optimistic Oracle. For traders, monitoring heartbeat and deviation thresholds, update cadence, signer sets, and dispute windows helps manage liquidation risk, slippage, and basis in perp and lending markets that rely on these feeds, source: Chainlink Documentation Data Feeds heartbeat and deviation parameters; Pyth Documentation update cadence and low latency; UMA Documentation dispute window parameters; Aave Docs liquidation mechanics.